fix: grid block mask applies x/y ranges both to rows

[andrewwhitecdw]

This PR addresses the following issue in exts/omni.ext.mobility_gen/omni/ext/mobility_gen/pose_samplers.py: grid block mask applies x/y ranges both to rows.

Changes

• exts/omni.ext.mobility_gen/omni/ext/mobility_gen/pose_samplers.py: grid block mask applies x/y ranges both to rows.

Details

Before:

        block_mask = np.zeros_like(mask)
        block_mask[block_x_min:block_x_min+block_size_px] = True
        block_mask[block_y_min:block_y_min+block_size_px] = True

        net_mask = block_mask & mask

After:

        block_mask = np.zeros_like(mask)
        block_mask[:, block_x_min:block_x_min+block_size_px] = True
        block_mask[block_y_min:block_y_min+block_size_px, :] = True

        net_mask = block_mask & mask